1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc1c9a172fb90e8f21cb15c890d32915b37ce619ca11d12a546ef21e829258f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b96f35f4-743e-4891-88fc-d08fd95aa722.json and https://artists.proofprofile.net/proofs/artist/b96f35f4-743e-4891-88fc-d08fd95aa722.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canciones infantiles, Vol. 1: Lingokids en español
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192d90a170cf9632ab91345a2676c3c0168875eb4b7706efa2dfb1d1191bb5c3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2363751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b8ca7956eb4853699aa09fef19ecf076db178592ed237a39b35befcc6f57e0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2363752.
Baila ¡Así! - quién, dónde, cuándo y cómo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce772faee871bd18944f807be0e67a0eb415232ec260b0f371e9fa4b53718087. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2363753.
Canciones infantiles, Vol. 2: Lingokids en español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e164da271cbc395cb01d9b59e7e6f0167765886dbfb8fe78c033de0a86b29c. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2384341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123c7adab4d565b5e032caf55a8cda04463bbe3d3e3a665ba446a9bb1f69f707. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2384343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dee431193f84dc138b05ef45895d0cd77eadbf3a69a16292dc93736b574ba6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2384344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e286ed3c2fb12993e5cd7330c779cd561d7c2695fdc2571774b327d94454da1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:22:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2384346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec75d1c1fa0ba61e0601f7cc61d6647c814c55f166471d74864aa487f329665. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2384347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfe3c29fd6a820c850f1216a36adb162e02b42e7b4078c427cbfc03a7a05804. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2384349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb19ca3880d49efd8480306b19412908a22c3d2f5db79875e92524f1e21ee9ad. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2384351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd32427952609b31e737aa124148af85be768803be96e3224d2c3a88ec26adf8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2384352.
Canciones infantiles Vol.3: Lingokids en español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113160acc1417e7918dbae30076120d693692667d323429fbbd1160c0a7b48de. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62403080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551f3044236f80fcc847ba469d094c210d3512dd499bcbbd6c8d26d8acfbd939. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62403081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25885aec2706310c922a0dae48be8fa5b2fee8a6024cca6a6e05eb444060bb50. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62403083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aed8c1d55451215e720b28eef99498c46f2a079a61e97a7a87e2fc85393138. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62403084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2ab13b766e22ca7353686dc5db9b2d6d79e4d47f6f06c1749d3803b677eeb0. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:59:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62403087.
La Granja de Mi Tío (Old MacDonald en Español)
Canciones infantiles Vol.4: Lingokids en español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad99905f194071b19b30326e05e5f995fea0d1a4ff9bce58a319a13e5fbe93f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES62404929.
La Cuenta Atrás - Cuenta desde el 20 hasta el 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf121482207d4778be5ced556767e3388be403eb494d86599af32e7d9b44f175. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2408239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3069b5b951d157c6911117505c57fbb3af85807d4fe93fecc8caa909469a8f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2408243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469a0fb4b244c0238621d4a762695566159a6ef4266661c4ba24a0059d5f2a08. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2408244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f43bd3a3c7292da6e4008ea0fd32a978e9c6be0f64b96e70b9b5a2a89e0431. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:19:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2461766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664097f47ebbf2931ae1e80ecba72d2bd5e8c5eb7cd4984c9c07ce0ff0eec44f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2450126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031fc76702db3fd0780be6e24e1c446af7cd2c545cec0d63fe8526731143c732. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2487211.
A, B, C: Canciones para que tu peque aprenda lectoescritura y vocabulario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0691a7c79b85e809a72fb069979ef8dc352caeb50d53ef0ee54d17f512283113. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2384340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec75d1c1fa0ba61e0601f7cc61d6647c814c55f166471d74864aa487f329665. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2384347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113160acc1417e7918dbae30076120d693692667d323429fbbd1160c0a7b48de. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62403080.
Vives en Mí (Canción de Halloween y Día de los Muertos)
Vives en Mí - Canción de Halloween y Día de los Muertos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e4ed748b62c47174a870b2d5191b7512c4de500079b24d7852da47bbdcfc02. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2485483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc697d6faa63b55725aec64e9375a9ca9c6130a5ed81123c2690719f801ab1a0e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAV2439638.
Baila ¡Así! (quién, dónde, cuándo y cómo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61c0ffeb3d21d792db0b1ac55e26cf76e597f29ab988b7b9f8b22e29581def6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAV2439645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85495f9c143aea8e0ceeac91370e302b70efd06942bee1fc89af64342a580567. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAV2439647.
¡Agradecidos! (Aprendiendo a dar las Gracias)
¡Agradecidos! - Aprendiendo a dar las Gracias
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a9f6b3e837b8502804d22767524b80556f1f049a789d5ba5c60d6850920f32. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFW2456729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c2c49edc7d3dfc561504d6f497bfadf668bed4c0b4446d6e68488d687768bd. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ792466224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7f990bda3651ce0ad88e5d170f57070d4d2811a90211dc48ff4f339dd55dfa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAV2441358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c4d618f0dafe9ee3840513c374edf5b729a66430316445d2e05f8ad74cc3a4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAV2441350.
¡Fiesta Infantil! Canciones divertidas para celebrar
Canciones infantiles Vol.5: Lingokids en español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059a8c5d6f0777dd075d07d1f3729421cf15bf83829b58cf13e449cbfcc8f5b9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2444049.
Roaaaar, ¡a bailar! Canciones para aprender sobre animales y naturaleza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaac6d94c68f517682c7c6f365aa56bac8aae3df0d51de47c27618628eca9c2f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2363755.